/*      $NetBSD: common.c,v 1.10 2001/01/10 07:45:41 jdolecek Exp $     */

/*-
 * Copyright (c) 1992, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Christos Zoulas of Cornell University.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the University of
 *      California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include "compat.h"
#if !defined(lint) && !defined(SCCSID)
#if 0
static char sccsid[] = "@(#)common.c    8.1 (Berkeley) 6/4/93";
#else
__RCSID("$NetBSD: common.c,v 1.10 2001/01/10 07:45:41 jdolecek Exp $");
#endif
#endif /* not lint && not SCCSID */

/*
 * common.c: Common Editor functions
 */
#include "sys.h"
#include "el.h"

/* ed_end_of_file():
 *      Indicate end of file
 *      [^D]
 */
protected el_action_t
/*ARGSUSED*/
ed_end_of_file(EditLine *el, int c)
{

        re_goto_bottom(el);
        *el->el_line.lastchar = '\0';
        return (CC_EOF);
}


/* ed_insert():
 *      Add character to the line
 *      Insert a character [bound to all insert keys]
 */
protected el_action_t
ed_insert(EditLine *el, int c)
{
        int i;

        if (c == '\0')
                return (CC_ERROR);

        if (el->el_line.lastchar + el->el_state.argument >=
            el->el_line.limit) {
                /* end of buffer space, try to allocate more */
                if (!ch_enlargebufs(el, (size_t) el->el_state.argument))
                        return CC_ERROR;        /* error allocating more */
        }

        if (el->el_state.argument == 1) {
                if (el->el_state.inputmode != MODE_INSERT) {
                        el->el_chared.c_undo.buf[el->el_chared.c_undo.isize++] =
                            *el->el_line.cursor;
                        el->el_chared.c_undo.buf[el->el_chared.c_undo.isize] =
                            '\0';
                        c_delafter(el, 1);
                }
                c_insert(el, 1);

                *el->el_line.cursor++ = c;
                el->el_state.doingarg = 0;      /* just in case */
                re_fastaddc(el);                /* fast refresh for one char. */
        } else {
                if (el->el_state.inputmode != MODE_INSERT) {
                        for (i = 0; i < el->el_state.argument; i++)
                                el->el_chared.c_undo.buf[el->el_chared.c_undo.isize++] =
                                    el->el_line.cursor[i];

                        el->el_chared.c_undo.buf[el->el_chared.c_undo.isize] =
                            '\0';
                        c_delafter(el, el->el_state.argument);
                }
                c_insert(el, el->el_state.argument);

                while (el->el_state.argument--)
                        *el->el_line.cursor++ = c;
                re_refresh(el);
        }

        if (el->el_state.inputmode == MODE_REPLACE_1)
                (void) vi_command_mode(el, 0);

        return (CC_NORM);
}


/* ed_delete_prev_word():
 *      Delete from beginning of current word to cursor
 *      [M-^?] [^W]
 */
protected el_action_t
/*ARGSUSED*/
ed_delete_prev_word(EditLine *el, int c)
{
        char *cp, *p, *kp;

        if (el->el_line.cursor == el->el_line.buffer)
                return (CC_ERROR);

        cp = c__prev_word(el->el_line.cursor, el->el_line.buffer,
            el->el_state.argument, ce__isword);

        for (p = cp, kp = el->el_chared.c_kill.buf; p < el->el_line.cursor; p++)
                *kp++ = *p;
        el->el_chared.c_kill.last = kp;

        c_delbefore(el, el->el_line.cursor - cp);       /* delete before dot */
        el->el_line.cursor = cp;
        if (el->el_line.cursor < el->el_line.buffer)
                el->el_line.cursor = el->el_line.buffer; /* bounds check */
        return (CC_REFRESH);
}


/* ed_delete_next_char():
 *      Delete character under cursor
 *      [^D] [x]
 */
protected el_action_t
/*ARGSUSED*/
ed_delete_next_char(EditLine *el, int c)
{
#ifdef notdef                   /* XXX */
#define EL      el->el_line
        (void) fprintf(el->el_errlfile,
            "\nD(b: %x(%s)  c: %x(%s) last: %x(%s) limit: %x(%s)\n",
            EL.buffer, EL.buffer, EL.cursor, EL.cursor, EL.lastchar,
            EL.lastchar, EL.limit, EL.limit);
#endif
        if (el->el_line.cursor == el->el_line.lastchar) {
                        /* if I'm at the end */
                if (el->el_map.type == MAP_VI) {
                        if (el->el_line.cursor == el->el_line.buffer) {
                                /* if I'm also at the beginning */
#ifdef KSHVI
                                return (CC_ERROR);
#else
                                term_overwrite(el, STReof, 4);
                                        /* then do a EOF */
                                term__flush();
                                return (CC_EOF);
#endif
                        } else {
#ifdef KSHVI
                                el->el_line.cursor--;
#else
                                return (CC_ERROR);
#endif
                        }
                } else {
                        if (el->el_line.cursor != el->el_line.buffer)
                                el->el_line.cursor--;
                        else
                                return (CC_ERROR);
                }
        }
        c_delafter(el, el->el_state.argument);  /* delete after dot */
        if (el->el_line.cursor >= el->el_line.lastchar &&
            el->el_line.cursor > el->el_line.buffer)
                        /* bounds check */
                el->el_line.cursor = el->el_line.lastchar - 1;
        return (CC_REFRESH);
}


/* ed_kill_line():
 *      Cut to the end of line
 *      [^K] [^K]
 */
protected el_action_t
/*ARGSUSED*/
ed_kill_line(EditLine *el, int c)
{
        char *kp, *cp;

        cp = el->el_line.cursor;
        kp = el->el_chared.c_kill.buf;
        while (cp < el->el_line.lastchar)
                *kp++ = *cp++;  /* copy it */
        el->el_chared.c_kill.last = kp;
                        /* zap! -- delete to end */
        el->el_line.lastchar = el->el_line.cursor;
        return (CC_REFRESH);
}


/* ed_move_to_end():
 *      Move cursor to the end of line
 *      [^E] [^E]
 */
protected el_action_t
/*ARGSUSED*/
ed_move_to_end(EditLine *el, int c)
{

        el->el_line.cursor = el->el_line.lastchar;
        if (el->el_map.type == MAP_VI) {
#ifdef VI_MOVE
                el->el_line.cursor--;
#endif
                if (el->el_chared.c_vcmd.action & DELETE) {
                        cv_delfini(el);
                        return (CC_REFRESH);
                }
        }
        return (CC_CURSOR);
}


/* ed_move_to_beg():
 *      Move cursor to the beginning of line
 *      [^A] [^A]
 */
protected el_action_t
/*ARGSUSED*/
ed_move_to_beg(EditLine *el, int c)
{

        el->el_line.cursor = el->el_line.buffer;

        if (el->el_map.type == MAP_VI) {
                        /* We want FIRST non space character */
                while (isspace((unsigned char) *el->el_line.cursor))
                        el->el_line.cursor++;
                if (el->el_chared.c_vcmd.action & DELETE) {
                        cv_delfini(el);
                        return (CC_REFRESH);
                }
        }
        return (CC_CURSOR);
}


/* ed_transpose_chars():
 *      Exchange the character to the left of the cursor with the one under it
 *      [^T] [^T]
 */
protected el_action_t
ed_transpose_chars(EditLine *el, int c)
{

        if (el->el_line.cursor < el->el_line.lastchar) {
                if (el->el_line.lastchar <= &el->el_line.buffer[1])
                        return (CC_ERROR);
                else
                        el->el_line.cursor++;
        }
        if (el->el_line.cursor > &el->el_line.buffer[1]) {
                /* must have at least two chars entered */
                c = el->el_line.cursor[-2];
                el->el_line.cursor[-2] = el->el_line.cursor[-1];
                el->el_line.cursor[-1] = c;
                return (CC_REFRESH);
        } else
                return (CC_ERROR);
}


/* ed_next_char():
 *      Move to the right one character
 *      [^F] [^F]
 */
protected el_action_t
/*ARGSUSED*/
ed_next_char(EditLine *el, int c)
{

        if (el->el_line.cursor >= el->el_line.lastchar)
                return (CC_ERROR);

        el->el_line.cursor += el->el_state.argument;
        if (el->el_line.cursor > el->el_line.lastchar)
                el->el_line.cursor = el->el_line.lastchar;

        if (el->el_map.type == MAP_VI)
                if (el->el_chared.c_vcmd.action & DELETE) {
                        cv_delfini(el);
                        return (CC_REFRESH);
                }
        return (CC_CURSOR);
}


/* ed_prev_word():
 *      Move to the beginning of the current word
 *      [M-b] [b]
 */
protected el_action_t
/*ARGSUSED*/
ed_prev_word(EditLine *el, int c)
{

        if (el->el_line.cursor == el->el_line.buffer)
                return (CC_ERROR);

        el->el_line.cursor = c__prev_word(el->el_line.cursor,
            el->el_line.buffer,
            el->el_state.argument,
            ce__isword);

        if (el->el_map.type == MAP_VI)
                if (el->el_chared.c_vcmd.action & DELETE) {
                        cv_delfini(el);
                        return (CC_REFRESH);
                }
        return (CC_CURSOR);
}


/* ed_prev_char():
 *      Move to the left one character
 *      [^B] [^B]
 */
protected el_action_t
/*ARGSUSED*/
ed_prev_char(EditLine *el, int c)
{

        if (el->el_line.cursor > el->el_line.buffer) {
                el->el_line.cursor -= el->el_state.argument;
                if (el->el_line.cursor < el->el_line.buffer)
                        el->el_line.cursor = el->el_line.buffer;

                if (el->el_map.type == MAP_VI)
                        if (el->el_chared.c_vcmd.action & DELETE) {
                                cv_delfini(el);
                                return (CC_REFRESH);
                        }
                return (CC_CURSOR);
        } else
                return (CC_ERROR);
}


/* ed_quoted_insert():
 *      Add the next character typed verbatim
 *      [^V] [^V]
 */
protected el_action_t
ed_quoted_insert(EditLine *el, int c)
{
        int num;
        char tc;

        tty_quotemode(el);
        num = el_getc(el, &tc);
        c = (unsigned char) tc;
        tty_noquotemode(el);
        if (num == 1)
                return (ed_insert(el, c));
        else
                return (ed_end_of_file(el, 0));
}


/* ed_digit():
 *      Adds to argument or enters a digit
 */
protected el_action_t
ed_digit(EditLine *el, int c)
{

        if (!isdigit(c))
                return (CC_ERROR);

        if (el->el_state.doingarg) {
                        /* if doing an arg, add this in... */
                if (el->el_state.lastcmd == EM_UNIVERSAL_ARGUMENT)
                        el->el_state.argument = c - '0';
                else {
                        if (el->el_state.argument > 1000000)
                                return (CC_ERROR);
                        el->el_state.argument =
                            (el->el_state.argument * 10) + (c - '0');
                }
                return (CC_ARGHACK);
        } else {
                if (el->el_line.lastchar + 1 >= el->el_line.limit) {
                        if (!ch_enlargebufs(el, 1))
                                return (CC_ERROR);
                }

                if (el->el_state.inputmode != MODE_INSERT) {
                        el->el_chared.c_undo.buf[el->el_chared.c_undo.isize++] =
                            *el->el_line.cursor;
                        el->el_chared.c_undo.buf[el->el_chared.c_undo.isize] =
                            '\0';
                        c_delafter(el, 1);
                }
                c_insert(el, 1);
                *el->el_line.cursor++ = c;
                el->el_state.doingarg = 0;
                re_fastaddc(el);
        }
        return (CC_NORM);
}


/* ed_argument_digit():
 *      Digit that starts argument
 *      For ESC-n
 */
protected el_action_t
ed_argument_digit(EditLine *el, int c)
{

        if (!isdigit(c))
                return (CC_ERROR);

        if (el->el_state.doingarg) {
                if (el->el_state.argument > 1000000)
                        return (CC_ERROR);
                el->el_state.argument = (el->el_state.argument * 10) +
                    (c - '0');
        } else {                /* else starting an argument */
                el->el_state.argument = c - '0';
                el->el_state.doingarg = 1;
        }
        return (CC_ARGHACK);
}


/* ed_unassigned():
 *      Indicates unbound character
 *      Bound to keys that are not assigned
 */
protected el_action_t
/*ARGSUSED*/
ed_unassigned(EditLine *el, int c)
{

        term_beep(el);
        term__flush();
        return (CC_NORM);
}


/**
 ** TTY key handling.
 **/

/* ed_tty_sigint():
 *      Tty interrupt character
 *      [^C]
 */
protected el_action_t
/*ARGSUSED*/
ed_tty_sigint(EditLine *el, int c)
{

        return (CC_NORM);
}


/* ed_tty_dsusp():
 *      Tty delayed suspend character
 *      [^Y]
 */
protected el_action_t
/*ARGSUSED*/
ed_tty_dsusp(EditLine *el, int c)
{

        return (CC_NORM);
}


/* ed_tty_flush_output():
 *      Tty flush output characters
 *      [^O]
 */
protected el_action_t
/*ARGSUSED*/
ed_tty_flush_output(EditLine *el, int c)
{

        return (CC_NORM);
}


/* ed_tty_sigquit():
 *      Tty quit character
 *      [^\]
 */
protected el_action_t
/*ARGSUSED*/
ed_tty_sigquit(EditLine *el, int c)
{

        return (CC_NORM);
}


/* ed_tty_sigtstp():
 *      Tty suspend character
 *      [^Z]
 */
protected el_action_t
/*ARGSUSED*/
ed_tty_sigtstp(EditLine *el, int c)
{

        return (CC_NORM);
}


/* ed_tty_stop_output():
 *      Tty disallow output characters
 *      [^S]
 */
protected el_action_t
/*ARGSUSED*/
ed_tty_stop_output(EditLine *el, int c)
{

        return (CC_NORM);
}


/* ed_tty_start_output():
 *      Tty allow output characters
 *      [^Q]
 */
protected el_action_t
/*ARGSUSED*/
ed_tty_start_output(EditLine *el, int c)
{

        return (CC_NORM);
}


/* ed_newline():
 *      Execute command
 *      [^J]
 */
protected el_action_t
/*ARGSUSED*/
ed_newline(EditLine *el, int c)
{

        re_goto_bottom(el);
        *el->el_line.lastchar++ = '\n';
        *el->el_line.lastchar = '\0';
        if (el->el_map.type == MAP_VI)
                el->el_chared.c_vcmd.ins = el->el_line.buffer;
        return (CC_NEWLINE);
}


/* ed_delete_prev_char():
 *      Delete the character to the left of the cursor
 *      [^?]
 */
protected el_action_t
/*ARGSUSED*/
ed_delete_prev_char(EditLine *el, int c)
{

        if (el->el_line.cursor <= el->el_line.buffer)
                return (CC_ERROR);

        c_delbefore(el, el->el_state.argument);
        el->el_line.cursor -= el->el_state.argument;
        if (el->el_line.cursor < el->el_line.buffer)
                el->el_line.cursor = el->el_line.buffer;
        return (CC_REFRESH);
}


/* ed_clear_screen():
 *      Clear screen leaving current line at the top
 *      [^L]
 */
protected el_action_t
/*ARGSUSED*/
ed_clear_screen(EditLine *el, int c)
{

        term_clear_screen(el);  /* clear the whole real screen */
        re_clear_display(el);   /* reset everything */
        return (CC_REFRESH);
}


/* ed_redisplay():
 *      Redisplay everything
 *      ^R
 */
protected el_action_t
/*ARGSUSED*/
ed_redisplay(EditLine *el, int c)
{

        return (CC_REDISPLAY);
}


/* ed_start_over():
 *      Erase current line and start from scratch
 *      [^G]
 */
protected el_action_t
/*ARGSUSED*/
ed_start_over(EditLine *el, int c)
{

        ch_reset(el);
        return (CC_REFRESH);
}


/* ed_sequence_lead_in():
 *      First character in a bound sequence
 *      Placeholder for external keys
 */
protected el_action_t
/*ARGSUSED*/
ed_sequence_lead_in(EditLine *el, int c)
{

        return (CC_NORM);
}


/* ed_prev_history():
 *      Move to the previous history line
 *      [^P] [k]
 */
protected el_action_t
/*ARGSUSED*/
ed_prev_history(EditLine *el, int c)
{
        char beep = 0;

        el->el_chared.c_undo.action = NO_OP;
        *el->el_line.lastchar = '\0';           /* just in case */

        if (el->el_history.eventno == 0) {      /* save the current buffer
                                                 * away */
                (void) strncpy(el->el_history.buf, el->el_line.buffer,
                    EL_BUFSIZ);
                el->el_history.last = el->el_history.buf +
                    (el->el_line.lastchar - el->el_line.buffer);
        }
        el->el_history.eventno += el->el_state.argument;

        if (hist_get(el) == CC_ERROR) {
                beep = 1;
                /* el->el_history.eventno was fixed by first call */
                (void) hist_get(el);
        }
        re_refresh(el);
        if (beep)
                return (CC_ERROR);
        else
                return (CC_NORM);       /* was CC_UP_HIST */
}


/* ed_next_history():
 *      Move to the next history line
 *      [^N] [j]
 */
protected el_action_t
/*ARGSUSED*/
ed_next_history(EditLine *el, int c)
{

        el->el_chared.c_undo.action = NO_OP;
        *el->el_line.lastchar = '\0';   /* just in case */

        el->el_history.eventno -= el->el_state.argument;

        if (el->el_history.eventno < 0) {
                el->el_history.eventno = 0;
                return (CC_ERROR);/* make it beep */
        }
        return (hist_get(el));
}


/* ed_search_prev_history():
 *      Search previous in history for a line matching the current
 *      next search history [M-P] [K]
 */
protected el_action_t
/*ARGSUSED*/
ed_search_prev_history(EditLine *el, int c)
{
        const char *hp;
        int h;
        int found = 0;

        el->el_chared.c_vcmd.action = NO_OP;
        el->el_chared.c_undo.action = NO_OP;
        *el->el_line.lastchar = '\0';   /* just in case */
        if (el->el_history.eventno < 0) {
#ifdef DEBUG_EDIT
                (void) fprintf(el->el_errfile,
                    "e_prev_search_hist(): eventno < 0;\n");
#endif
                el->el_history.eventno = 0;
                return (CC_ERROR);
        }
        if (el->el_history.eventno == 0) {
                (void) strncpy(el->el_history.buf, el->el_line.buffer,
                    EL_BUFSIZ);
                el->el_history.last = el->el_history.buf +
                    (el->el_line.lastchar - el->el_line.buffer);
        }
        if (el->el_history.ref == NULL)
                return (CC_ERROR);

        hp = HIST_FIRST(el);
        if (hp == NULL)
                return (CC_ERROR);

        c_setpat(el);           /* Set search pattern !! */

        for (h = 1; h <= el->el_history.eventno; h++)
                hp = HIST_NEXT(el);

        while (hp != NULL) {
#ifdef SDEBUG
                (void) fprintf(el->el_errfile, "Comparing with \"%s\"\n", hp);
#endif
                if ((strncmp(hp, el->el_line.buffer, (size_t)
                            (el->el_line.lastchar - el->el_line.buffer)) ||
                        hp[el->el_line.lastchar - el->el_line.buffer]) &&
                    c_hmatch(el, hp)) {
                        found++;
                        break;
                }
                h++;
                hp = HIST_NEXT(el);
        }

        if (!found) {
#ifdef SDEBUG
                (void) fprintf(el->el_errfile, "not found\n");
#endif
                return (CC_ERROR);
        }
        el->el_history.eventno = h;

        return (hist_get(el));
}


/* ed_search_next_history():
 *      Search next in history for a line matching the current
 *      [M-N] [J]
 */
protected el_action_t
/*ARGSUSED*/
ed_search_next_history(EditLine *el, int c)
{
        const char *hp;
        int h;
        int found = 0;

        el->el_chared.c_vcmd.action = NO_OP;
        el->el_chared.c_undo.action = NO_OP;
        *el->el_line.lastchar = '\0';   /* just in case */

        if (el->el_history.eventno == 0)
                return (CC_ERROR);

        if (el->el_history.ref == NULL)
                return (CC_ERROR);

        hp = HIST_FIRST(el);
        if (hp == NULL)
                return (CC_ERROR);

        c_setpat(el);           /* Set search pattern !! */

        for (h = 1; h < el->el_history.eventno && hp; h++) {
#ifdef SDEBUG
                (void) fprintf(el->el_errfile, "Comparing with \"%s\"\n", hp);
#endif
                if ((strncmp(hp, el->el_line.buffer, (size_t)
                            (el->el_line.lastchar - el->el_line.buffer)) ||
                        hp[el->el_line.lastchar - el->el_line.buffer]) &&
                    c_hmatch(el, hp))
                        found = h;
                hp = HIST_NEXT(el);
        }

        if (!found) {           /* is it the current history number? */
                if (!c_hmatch(el, el->el_history.buf)) {
#ifdef SDEBUG
                        (void) fprintf(el->el_errfile, "not found\n");
#endif
                        return (CC_ERROR);
                }
        }
        el->el_history.eventno = found;

        return (hist_get(el));
}


/* ed_prev_line():
 *      Move up one line
 *      Could be [k] [^p]
 */
protected el_action_t
/*ARGSUSED*/
ed_prev_line(EditLine *el, int c)
{
        char *ptr;
        int nchars = c_hpos(el);

        /*
         * Move to the line requested
         */
        if (*(ptr = el->el_line.cursor) == '\n')
                ptr--;

        for (; ptr >= el->el_line.buffer; ptr--)
                if (*ptr == '\n' && --el->el_state.argument <= 0)
                        break;

        if (el->el_state.argument > 0)
                return (CC_ERROR);

        /*
         * Move to the beginning of the line
         */
        for (ptr--; ptr >= el->el_line.buffer && *ptr != '\n'; ptr--)
                continue;

        /*
         * Move to the character requested
         */
        for (ptr++;
            nchars-- > 0 && ptr < el->el_line.lastchar && *ptr != '\n';
            ptr++)
                continue;

        el->el_line.cursor = ptr;
        return (CC_CURSOR);
}


/* ed_next_line():
 *      Move down one line
 *      Could be [j] [^n]
 */
protected el_action_t
/*ARGSUSED*/
ed_next_line(EditLine *el, int c)
{
        char *ptr;
        int nchars = c_hpos(el);

        /*
         * Move to the line requested
         */
        for (ptr = el->el_line.cursor; ptr < el->el_line.lastchar; ptr++)
                if (*ptr == '\n' && --el->el_state.argument <= 0)
                        break;

        if (el->el_state.argument > 0)
                return (CC_ERROR);

        /*
         * Move to the character requested
         */
        for (ptr++;
            nchars-- > 0 && ptr < el->el_line.lastchar && *ptr != '\n';
            ptr++)
                continue;

        el->el_line.cursor = ptr;
        return (CC_CURSOR);
}


/* ed_command():
 *      Editline extended command
 *      [M-X] [:]
 */
protected el_action_t
/*ARGSUSED*/
ed_command(EditLine *el, int c)
{
        char tmpbuf[EL_BUFSIZ];
        int tmplen;

        el->el_line.buffer[0] = '\0';
        el->el_line.lastchar = el->el_line.buffer;
        el->el_line.cursor = el->el_line.buffer;

        c_insert(el, 3);        /* prompt + ": " */
        *el->el_line.cursor++ = '\n';
        *el->el_line.cursor++ = ':';
        *el->el_line.cursor++ = ' ';
        re_refresh(el);

        tmplen = c_gets(el, tmpbuf);
        tmpbuf[tmplen] = '\0';

        el->el_line.buffer[0] = '\0';
        el->el_line.lastchar = el->el_line.buffer;
        el->el_line.cursor = el->el_line.buffer;

        if (parse_line(el, tmpbuf) == -1)
                return (CC_ERROR);
        else
                return (CC_REFRESH);
}
